Робочий аркуш «Біологія для вступних іспитів на медсестринство» з відповідями

What is a Punnett square used for?

1. ACounting the chromosomes in a cell
2. BPredicting the possible genotypes of offspring
3. CShowing the order of genes on a chromosome
4. DMeasuring the size of a cell

Яке твердження описує бактерії?

1. AЦе одноклітинні еукаріоти з ядром
2. BЦе багатоклітинні організми, як рослини
3. CЦе не клітини, а частинки з білка й ДНК
4. DЦе одноклітинні прокаріоти

In which form do animals store glucose in the liver and muscles?

1. AStarch
2. BChitin
3. CCellulose
4. DGlycogen

Why is a buffer system important in blood?

1. AIt carries oxygen to the tissues
2. BIt raises the blood glucose level
3. CIt makes the blood clot faster
4. DIt resists changes in pH

What happens to an enzyme after it has catalysed a reaction?

1. AIt changes into the substrate
2. BIt is broken down into amino acids
3. CIt is released unchanged and can be used again
4. DIt becomes part of the product and leaves with it

After gel electrophoresis, which DNA fragments are found furthest from the wells?

1. AThe fragments with the most adenine
2. BThe smallest fragments
3. CThe fragments with the most guanine
4. DThe largest fragments

Parts of a protein chain coil into alpha helices and fold into beta sheets, held by hydrogen bonds. Which level of protein structure is this?

1. APrimary structure
2. BTertiary structure
3. CQuaternary structure
4. DSecondary structure

Ignoring crossing over, how many different combinations of chromosomes can one person's gametes have because of independent assortment?

1. A2 × 23, which is 46
2. B46, one for each chromosome
3. C23², about 529
4. D2²³, about 8 million